FileProInfo.com is the file information database of over 15,000+ file types, software, free online apps/tools, so tools, guest blogs, videos, and images.
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Found great information about file extensions, software and also found the relative free online tools.
AppConvertly.com - AppConvertly - convert your website to Android & iOS app. No coding required. Easy solution to reach new audience in 5 minutes https://www.appconvertly.com/
Convertio - File Conversion in the Cloud
Median.co - Median.co (formerly GoNative.io) is the industry leading solution used to build iOS and Android webview apps. Get started for free and turn any website into a full-feature mobile app in seconds.
File-Extensions.org - Large computer file extension library with detailed explanation of each file type with links to download free or associated software programs.
Website 2 APK Builder - Convert your HTML, CSS, JS and all other web content into an Android App within seconds.
FileInfo.com - FileInfo is the central file extensions registry and contains a database of over 10,000 file types.